As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN)L2 DOOR ARMING HANDLE MOVED TO DISARM DURING FLIGHT. IN FLIGHT THE HANDLE GRADUALLY RAISED AND THE SLIDE ARMED INDICATION SHOWED DISARMED. MAINTENANCE ACTION INVOLVED ADJUSTING TENSION ON ARM/DISARM C ABLE, ADJUSTED PROXIMITY SWITCH TARGET AND OPERATIONALLY CHECKED.